CVE-2026-55366

Authentication Bypass in Android IP Multimedia Subsystem Enables Remote Privilege Escalation

Published Sep 15, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
In IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
Type Values Removed Values Added
Title Authentication Bypass in Android IP Multimedia Subsystem Enables Remote Privilege Escalation
Type Values Removed Values Added
Title IP Multimedia Subsystem Authentication Bypass Allowing Remote Privilege Escalation in Android
Weaknesses CWE-287
CWE-639
Type Values Removed Values Added
Weaknesses CWE-693
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title IP Multimedia Subsystem Authentication Bypass Allowing Remote Privilege Escalation in Android
Weaknesses CWE-287
CWE-639
Type Values Removed Values Added
First Time appeared Google
Google android
Vendors & Products Google
Google android
Type Values Removed Values Added
Description In IP Multimedia Subsystem, there is a possible authentication bypass due to a logic error in the code. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Google_Devices
Published
Updated
Sep 17, 2026, 3:56 AM
Reserved
Jun 16, 2026, 5:55 PM
Status
Analyzed
Published
Sep 15, 2026, 7:17 PM
Modified
Sep 21, 2026, 5:19 PM